Machine for making and staying paper boxes.



No. 65|,2I2. Patented June 5, |900.

H. B. SMITH.

MACHINE FUR MAKING AND STAYING PAPER BOXES.

(Application mad may. s, 1900.)

(No Model.)

NITED STATESv PATENT FF'IC.

c HAItRY n. sMrrH, or New YORK, N. Y.

MACHINE FOR MAKING AND STAYING PAPER BOXES.

SPECIFICATION forming part of Letters Patent Ne. 651,212, dated June 5, 19oo`. 1

Applieetien nea Meret 5,1900. sentire. 7,303. on model.)

To all whom, t may concern:

Beit known that I, HARRY B. SMITH, a citizen of the United States, residing at New York, (Brooklyn,) Kings county, New York, have invented certain new and useful Improvements in Machines for Shaping and Staying Paper Boxes, of which the following is a specification.

This invention relates to machines for manufacturin g paper boxes having cut-away or ornamental corners, and especially in a novel form of die and anvil constructed to shape and secure together the adjacent corner-flaps of a box-blank at a single operation; and it has for its object to provide a die and anvil arranged to simultaneously bend and shape the corner-flaps of the box-blank and apply the corner-stays or fastening-strips thereto to secure the corner-naps together.

To this end the invention consists of an anvil having converging side faces or walls, the apex of which is cut away or shaped, as desired, according to the shape of the corner of the boX being made, and in a die having a grooved portion corresponding in shape to the face of the anvil, said die working toward and from the anvil and operating upon the flaps of the box-blank to cause said flaps to be bent toward each other, whereby they will conform to the shape of the working faces of the die and anvil.

To these ends the invention consists in the novel features of construction and arrangement of parts hereinafter described and then more definitely pointed out in the claims following this description.

In the annexed drawings, illustrating the invention, Figure lis a vertical sectional View of aportion of a machine, showing the die and anvil in' position. Fig. 2 is a view looking at the front of the die and anvil. Fig. 3 is a perspective view of the die and anvil with a boxblank in position on the anvil. Fig. 4 is a modified form of die and anvil shaped to form a box with round corners. Figs. 5 and 6 are detail views of one corner of a box-blank, showing, respectively, a chamfered or beveled corner and a round corner. Fig. 7 is'a perspective view of one form of anvil.

In the Letters 'Patent granted to me October 10, 1899, No. 634,507, and in a separate application filed by me on the 12th day of September, 1899, I show and describe several different forms of boxes and blanks therefor, the corners of which are constructed and shaped in a novel and improved manner. In the box illustrated in said application I cut away the corners of the box-blank on diagonal or oblique lines, as indicated at 1, Fig. 5 of the drawings, and form side and end iiaps 2 and 3, respectively, provided with extended free ends 4 and 5, the said blank being scored on the lines 6 to facilitate bending up of said aps at right angles to the bottom 7 to form the sides and ends of the box. The respective lengths of the iiaps are such that after they have been bent up in the manner described and the free ends 4 and 5 have been bent. toward each other to conform to the straight inclined or diagonal corner l of the and 5 will abut and said ends will lie flush with one another and form a smooth and unbroken surface. In my patent above referred to I show and describe a box-blank constructed on the same principle, but the corners of the blank are cut away on the arc of a circle, as at S, Fig. 6, and the ends 4J and 5a of the flaps are bent to conform to such curved corners, their edges abutting in the manner before described. This forms a box with rounded corners. l In both the forms referred to the lcorner-flaps after being shaped or bent to conform to the cut-away corners of the box-bottom are secured together by applying to said flaps corner-stays consisting of metallic .or paper strips attached to the laps and covering their meeting edges.

My present invention .relates particularly to an improved form of anvil and die designed especially for bending or shaping the adjacent free ends'of the flaps forming part yof the box-blank, whereby a boX is provided having cut-away or ornamental corners, and while I have shown said die and anvil applied to a certain form of machine I wish it understood that I do not limit myself to the machine shown, as the parts forming theessence vof this invention may be arranged to fitl and be applied to any known type of machine capable of performing the work in hand.

In the machine herein illustrated a stationary anvil is employed, over which the corners t bottom the vertical edges of the free ends 4.-

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il; mais of the box are successively placed, while the clamping or shaping die is arranged to reciprocate above and toward and from the anvil, the strip from which the corner-stays are made being fed endwise between the die and anvil and is severed into proper lengths by a suitable cutter cooperating with the said die. Referring to the drawings, the numeral 9 indicates a part of the machine-frame, and 10 the anvil, which is bolted or otherwise secured to the said frame, as most clearly shown in Figs. l and 3 of the-drawings. In the construction shown in Figs. 2 and 3 the anvil consists of a base provided with a projeetin g nose 12, which is substantially semicircularon its under side and is provided on its upper side with a fiat working face 13 and two diverging walls or faces 14, which extend outward from said flat working face at obtuse angles, as clearly shown in Fig. 3 of the drawings.

The numeral 15 indicates the die shaped to coperate with the anvil just described, and itconsistsof a rod or bar provided on its under.` side with a longitudinal groove corresponding in configuration and dimensions to the flat face 13 and diverging faces 14 of the anvil, the said groove of the die beingboundcdfby` two converging side walls 16 and a flat top wall 17. The die is grasped and rigidly secured in a verticallymovable support, which in the type of machine illustrated is constructed as follows: The numeral 1S indicates a block having a longitudinal groove or recess formed in its underside, said groove orreeess being partially cylindrical in crosssection--that is to say, the walls of th e groove orreeess are formed on the arc of a circle of approximately `two hundred and seventy degreesorV at leastigreater than one hundred and eighty-degrees. The block is split ordivided r centrallyin line with said groove or recess, and passing transversely through said block. are `screws 10. The die 15 is inserted endwise in` the groove or recess of the block andpis prevented from turning axially therein-.by ai screw 20, which is` screwed into the endiface ofthe block and projects into a groove. 2l, formed in the` upper side of the die. After the die has been inserted in the block the screws 19 are tightened up, thereby securely clamping the die in place. is ^attached to and carried .by a slide 22, arranged to reciprocate vertically in suitable waysformed in a head-block 23, supported onlthe. frame of the machine.

24, oscillated by any suitable means, the short arm 25 ofsaid lever being loosely litted in a.A

The block The said slide reciprocated by a `pivoted bell-crank leverable feeding mechanism for the strip is'employed; but as this forms no partof the present invention it need not be illustrated.

In practice the side and end flaps of the box are first bent up at right angles to the bottoni 7 on the scored lines G, and the corners of thebox are successively placed on the anvil, as shown in Figs. 2 and 3, in which position the side and endflaps will lie and rest on the inclined or diverging sides or faces 14 of the anvil 12, and the extensions or free ends 4 and 5 will `project above the upper or flat face 13 of the anvil and converge toward each other. The stay or fastening strip 2S having been fed between the anvil and die,

the latter is caused to descend, its recessed` or grooved underside pressing the free ends 4 and 5 of the flaps against the flat apex or face 13 of the anvil, so as to cause them to `conform tothe cut-away portion of the corner of the box-bottom and to the shape ofthe die and anvil, thus bringing their edges together, so that they will abut. At the same `time and by the saine operation the stay or strip 28 is forcibly pressed down upon. the

bent ends 4 5 of the flaps over their line of jointure and is attached` thereto, securing them firmly together. The stay orstrip may` consist either of a paper strip, in .which ease its underside would be coated with an adhesive, or of athin metallic strip having projecting bu rs, spurs, or prongs formed on its under side either by indenting thestrip, striking up the spurs or prongs from the.` body` ofthe strip, or in any suitable orpreferred manner, the die when apaper strip is employed pressling the adhesive side of: the strip in contact with the 'fiaps and in case a metallic strip is employed causing the prongs to enter or penetrate the iiaps and flattening` them down by pressure against the anvil.

From the foregoing it will be seen thatithe flaps are bent so as to cause them to conform to the shape of the cut-awaycorner of` the box-blank andlto the adjacent faces Yof the die and anvil and their edges to abut Hush with one another, or substantiallyiso, and simultaneously with said operation the stay or fastening strip is applied to the flaps and secures the latter together, the whole beling performed at a single operation, thereby effecting an economy in `both time and labor, and insuring the flaps being fastened accurately inthe position to which they are `bent or shaped and also insu ring their-conformity `truly to` the formation of the cut-away por- `tion of the corner of the blank.

In Fig. 4 I show a die and anvil arranged to form aibox with round corners. In this figure thenumeral 29 indicates the nose. of

.the anvil, which is provided with a round working face 30 and diverging side facesl, and the die is provided on its under side with a grooved portion providing a curved working face 33, corresponding in shape and dimensions to the curved face of the anvil.

The operation of this form of die and anvil IOO l'IO

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h21? I S is precisely thev same as the other form heretofore described, and it need not, therefore, be again treated.

While I have only shown the anvil and die constructed for shaping the iiaps of boxes having beveled or chamfered .corners and round corners, it will be obvious that by employing an anvil and die of the proper shape and configuration 'the sameoperation may be carried into effect to form boxes having other fanciful or ornamental designs, the anvil and die in all cases being shaped to correspond to the formation of the particular style of box desired.

It should be understood that any suitable machine for carrying the die and anvil may be employed, that herein shown and described being merely given as a simple and convenient means for practicing the invention.

ln the description of the operation of the device l have stated that the die and anvil act to bend or shape the free ends of the corneriiaps to conform to the cut-away corner of the blank and simultaneously therewithl apply a suitable fastening device; but it Will be understood that I may employ the die and anvil to simply bend or shape the corner-flaps in position to receive the fastening device or strip, the latter being afterward secured or applied by some other suitable tool or machine and at another operation. This twostep operation is especially advantageous when gummed-paper fastening-strips are employed. In using such strips it is desirable and in some cases necessary to first shape the corner-aps and afterward apply the fastening-strip at another operation, for the reason that the inherent elasticity of the iaps tends to cause them to assume somewhat their normal position after being bent or shaped under the action of the die and anvil, and it will thus be seen that the gum on the fastening-strip being fresh will not hold them in position. The two-step operation is also advantageous in the manufacture of fine-grade boxes where a very close and neat joint is desired and where a perfectly smooth or unbroken outer circumference is necessary,.and in making this grade of boxes instead of securing the flaps by separate corner-strips a single strip of paper is employed, which is secured or pasted entirely around the sides, ends, and corners of the box. By reason of the fact that the' flaps have all been previously shaped or bent to conform to the corners of the box this strip may thus be easily and quickly applied. Thus it will be seen that in some cases the die and anvil will be employed ina machine for alone shapingor bending the free ends of the corner-flaps. In

time when it descends upon the anvil, so that the interposed corner-flaps will remain under pressure and under the influence of the heated die for a time sufficient to cause said flaps to remain in the position to which they have been bent.

Having thus described my invention, what I claim is l l. In a machine for shaping box-blanks in the manufacture. of paper boxes having cutaway corners, an anvil comprising a bar having two converging side walls arranged at anv angle to each other and adapted to support the box, the apex of said bar being removed to provide an intermediate working face intersecting the said converging side walls, said sign of box-corner desired, combined with a grooved die having converging side walls and an intermediate working face all conforming in shape to the side walls and working face of the anvil, said die cooperating with the anvil and arranged to st-raddle the same so as to engage and bend or shape theprojecting free ends of the box-blank, causing them to approach each other and conform to the shape of the working faces of the die and anvil respectively, substantially as described.

2. In a machine for shaping box-blanks in the manufacture of boxes having cut-away corners, the combination with an anvil having converging side walls for supporting the sides of the box and an intermediate Working face intersecting the side walls, said working face being shaped to conform to the design of box-corner desired, of a grooved die having a working face corresponding in shape to the intermediate working face of the anvil and arranged to straddle the latter so as to engage and bend or shape the projecting free ends of the box-blank, and means for causing said die to move to and from the anvil.

3. In a machine for shaping box-blanks in the manufacture of boxes having round corners, the combination with an anvil having converging side walls for supporting the sides of the box and a curved intermediate working face intersecting said side walls, said working face being sha'ped to conform to the design of box-corner desired, of a grooved die having a curved working face corresponding to the intermediate working face of the anvil and arranged to straddlel the latter so as to engage and bend or shape the projecting free ends of the box-blank, and means for causing said die to move to and from the anvil.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HARRY n. sMiTI-r.

Vitnesses:

ERNEST l-l. BAYER, J. STOGDELL S'roxns.

working face conforming in shape to t-he de- 

